68kMLA Classic Interface
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| Macintosh II, Logic Board 820-0163-03 630-0140 SIM SIMM Memory Slot Connecter Replacements? | |
| Posted by: MAC007 on 2025-05-16 10:44:48 Hi all, this is my first post. I just joined. 🙂 I am looking to replace the SIM SIMM Memory slots connectors on this 820-0163-03 Logic Board. Someone broke them 🙁 and I really want to restore this Logic Board instead of turning it into a donor. I found this site and I think this is what I need. 
Dual 30 pin SIMM Socket Angled: Phoenix Enterprises -PE- Connectors IC Sockets Tools Cable WireMEMORY SOCKET SIMM-30X22X30 PIN DUAL ROWSIMM MODULE SOCKETLOW PROFILE: ANGLED 22 DEGREEMETAL LATCHESGOLD PLATED CONTACTSTIN PLATED TAILSTHROUGH HOLE PCB MOUNTAlso Available: 30 pin SIMM Socket Metal Latches HWS504030 pin SIMM Socket Plastic Latches HWS4323Dual 30 pin SIMM Socket Vertical HWS9594
www.peconnectors.com
Can anyone confirm for me or recommend where to get replacement slots/connectors. Pictures attached are the Logic Board I will be restoring. I hope I can source new slots/connectors rather them pulling them from another Logic Board. | |
| Posted by: ObeyDaleks on 2025-05-16 16:31:48 Those should work. I used them on a different mac (LCII?) and they were a perfect replacement. I believe all Macs, including the Mac II, have the same spacing on their dual 30 pin slots. PE is probably the best vendor for these parts. | |
| Posted by: zigzagjoe on 2025-05-17 08:59:54 Keep in mind those are angled connectors so you would need to replace all simm slots. Also, verify the spacing between rows is correct. There are dual slot sockets out there which have different spacing from what the Macs used. | |
| Posted by: ObeyDaleks on 2025-05-17 11:10:03 Honestly, even if for some reason the spacing is wrong, I would just cut them apart. The single slots from PE are much more expensive. | |
| Posted by: MAC007 on 2026-06-23 14:12:43 I want to say thank you for the replies I got back when I wrote this up! I also want to follow up, finally, because I got back to this project just a couple weeks ago. Nobody realized but the pictures I posted initially, that board did not have any broken memory connectors. I mixed up the boards I had here for repair... Here is the board with the broken memory connectors. Every clip is broke!! | |
| Posted by: MAC007 on 2026-06-23 14:14:03 I pulled these memory connectors from a donor IIci Logic Board. (don't worry, this IIci was way beyond saving!) | |
| Posted by: MAC007 on 2026-06-23 14:18:23 Removal of the broken memory connectors... This was my first time changing memory connectors, please don't bash me, I learned a few things, and the next time, I am sure they will come out even better. The only mishap I had was scratching the Logic Board under the connectors, (from prying out the broken ones), I am very disappointed about that! | |
| Posted by: MAC007 on 2026-06-23 16:49:05 This is the completed results. The memory seats perfectly. I am very happy I saved this Logic Board and the way it came out! I also did a full recap and installed new PRAM batteries. You can see that it is on and seeing all the memory. It's now a Happy Mac! 🙂 Basically the IIci memory connectors were a perfect replacement for this Logic Board. Made it look original like nothing ever happened. I was going to order some connectors but I was having my doubts. If I did this again, I would order the single memory connectors: https://www.peconnectors.com/sockets-pga-cpu-and-memory/hws4323/ Ya'll can close/ mark this thread as resolved. Thanks for everyone that helped. | |
| Posted by: MAC007 on 2026-06-23 17:18:28 Oh yeah, one more photo 🙂 The soldered pins on the bottom. | |
| Posted by: killvore on 2026-06-24 00:07:25 This looks great - congratulations! I also have a dead IIci with the good metal clips, and a happy but plasticy SE/30, maybe I should do the old switcheroo 😄 | |
Posted by: Callan on 2026-06-24 09:05:27I also have a dead IIci with the good metal clips, and a happy but plasticy SE/30, maybe I should do the old switcheroo 😄That's exactly what I normally do. I try to pick up all the battery bombed boards I can for the ram slots and parts. I'm sure those plastic ones were fine for the day (and cheaper for apple), but they definetly haven't passed the test of time. I cringe any time I have to remove a stick of ram from one. | |
Posted by: MAC007 on 2026-06-24 13:27:00This looks great - congratulations! I also have a dead IIci with the good metal clips, and a happy but plasticy SE/30, maybe I should do the old switcheroo 😄Thanks for chiming in, I really put my greatest efforts in. If they are not broken, why go through all that work?!? | |
Posted by: MAC007 on 2026-06-24 13:28:24That's exactly what I normally do. I try to pick up all the battery bombed boards I can for the ram slots and parts. I'm sure those plastic ones were fine for the day (and cheaper for apple), but they definetly haven't passed the test of time. I cringe any time I have to remove a stick of ram from one.It was definitely a lot of work to go through just to install the SAME plastic memory connectors so someone else can break them again! 😉 Maybe the slots will be treated better this time. I'm not sure how people break them, if you're very carful... I haven't seem to break one yet.... I do cringe every time too LOL. | |
Posted by: Callan on 2026-06-24 15:53:50It was definitely a lot of work to go through just to install the SAME plastic memory connectors so someone else can break them again! 😉That's me... I have an innate ability to find the fragile ones. Oh! and ditto! Great work! | |
| Posted by: croissantking on 2026-06-25 00:03:16 Excellent work. Removing those old SIMM sockets is one of the worst tasks I can think of - even once you think you’ve desoldered everything they just don’t want to come out. Some of the plastic sockets I’ve come across in SE/30s and the like are still very robust, so I wouldn’t automatically condemn them. | |
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